LIFE SCIENCE

Detailed explanation-1: -Recessive alleles only express their phenotype if an organism carries two identical copies of the recessive allele, meaning it is homozygous for the recessive allele. This means that the genotype of an organism with a dominant phenotype may be either homozygous or heterozygous for the dominant allele.

Detailed explanation-2: -Homozygous gene mutations are known as recessive mutations. For the mutation to be expressed in the phenotype, both alleles must contain abnormal versions of the gene.

Detailed explanation-3: -People who have recessive traits, like blue eyes or red hair, are always homozygous for that gene. The recessive allele is expressed because there isn’t a dominant one to mask it.